高压开关柜上部裸母线至天花板最小距离为()。
A.600mm
B.700mm
C.800mm
D.900mm
参考答案:D
I _____ to get in touch with Tony, my childhood friend, but without success. .
A.adapted
B.adopted
C.attempted
D.appealed
女性腹痛患者,在询问病史时特别要注意询问的是()
A.既往史
B.月经史及婚育史
C.手术及外伤史
D.伴随症状
E.腹痛的性质